Hand abrading tool



May 16, 1950 6. LE BON 2,507,914

HAND ABRADING TOOL Filed June 26, 1946 m s 33 2,21 Z6 BY 'Q a"v" ATTOR N EY Patented May 16, 1950 UNITED STATES PATENT orrlcs 2 Claims.

The present invention relates to tools and, more particularly to hand abrading tools. In accordance with the invention, a hand tool for accurate filing of bevels and the like is provided. A tool embodying the invention is useful generally where accuracy is desired for filing purposes. For example, it is useful for die and jig work and on forming blocks, templates, tools and the like.

A hand tool embodying the invention comprises a holder for a file or other abrading device which is provided with a guide surface and means to incline the file with respect to the guide surface. The degree of inclination can be set by a scale. The guide surface of the tool slides on a finished surface of the work in hand, thereby insuring accuracy of the filing or other abrading operation performed with the aid of the tool.

An object of the invention therefore, is to provide an improved abrading tool for filing bevels.

A further object of the invention is to provide a novel abrading tool having a guide surface for cooperation with a plane or curved surface of a work piece.

Another object of the invention is to provide a novel abrading tool having a guide portion and an abrading tool holding portion at a definite angle with respect to the guide portion.

Other and more specific objects will become apparent to one skilled in the art as the description proceeds with reference to the accompanying drawing in which:

Fig. 1 is a front view of a tool embodying the invention, the manner of using the tool bein illustrated;

Fig. 2 is a view in side elevation;

Fig. 3 is a back view;

Fig. 4 is an end view of illustrate a special feature or thereof; and

Fig. 5 is a view of the opposite end of the tool to illustrate the setting scale.

Referring to the drawings, the tool 9 of this invention comprises a guide part, indicated generally by reference character It, and a tool holding part, generally designated II. The sides [2 and M of the part II] are finished so that they are parallel and also parallel to a line passing through the center of the part II and the zero mark I6 which cooperates with a scale l9 (Fig. 5). It will be understood that only one of the sides l2 or l4 need be finished, or one of these sides may be convex as shown in the modification of Fig. 4. The latter arrangement facilitates use of the tool on a contour.

the tool of Fig. 1 to a modification Fig. 1 illustrates use of the tool 9 to file a bevel 2| on a work piece 22 shown in dot-dash outline. Fig. 1 also shows a file 24 or other metal working tool clamped in position in the tool holding part II. The part II is set at 45 degrees with respect to the part ill in Fig. 1 thereby illustrating the filing of a 45 degree bevel.

In more detail, the part II of the tool 9 is generally cylindrical. A threaded aperture 26 is coaxial with the axis of the part II. A clamping screw 28 is engaged in this aperture and holds the part II in its position of adjustment with respect to the part It. Any desired type of screw may be used, but an "Allen type is illustrated having a socket 3| to receive a special driving key or tool. While the part II is shown as being cylindrical, since this is a convenient form to manufacture, it will be understood that it may have any desired shape. Its inside end is finished flat so that it fits snugly against the part II).

A slot 33 holds the cutting or abrading tool, for example the file 24, which is clamped in position by a thumb screw 34 engaged in a threaded hole 36. The part II will hold a fiat or halfround file or similar tool.

The part It may be of unitary construction for accuracy, the finished surfaces I2 and H being provided on wings 38 and 39. The groove M is for the purpose of lightness of the entire tool 9. The recesses 42 and 43 provide chip clearance when the tool 9 is in use.

The adjusted position of the part I l is indicated by graduations of the scale l9 and the zero mark IE on the part II]. The part II is preferably adjustable through 45 degrees each way.

Fig. 4 of the drawings shows a modified form of the part In which is designated Illa. One of the finished surfaces l2a is formed on a radius for contour work. For example, if the surface of the work piece 22 of Fig. 1 is concave, the surface 12a would be used.

From the preceding description, it is believed that the use of the tool 9 will be apparent. The part II is set at the desired angle by using the scale IS, the file 24, or other desired tool is clamped in position by the thumb screw 34 and the tool 9 is moved to and fro on the work piece parallel to the work piece edge 46.

What is claimed is:

l. A hand tool for holding an abrading or cutting implement comprising, a channel-shaped holder having a pair of spaced flanges constituting guide surfaces for sliding contact with a work piece, said flanges being connected by a web having a forward part extending beyond the flanges to form a lug, an implement-holding part pivotally attached to the lug by pivoting means adjustable to hold said part in any selected position, said implement-holding part having a free end formed with an open-ended implement-receiving slot extending inwardly from said free end for a portion of the length of the part, and implementclamping means extending transversely of said part and entrant into the slot to engage and clamp atool therein.

2. A hand tool for holding an abrading or cutting implement comprising, a holder having a relatively flat surface for slidable reception on a surface of a work piece, a lug extending forward- 1y of the holder, a substantially cylindrical implement-receiving member pivotally attached at one of its ends to said lug, the other end of said mem- 4 her being a free end and being inwardly slotted from said end for a portion of its length to receive an implement, and a threaded clamping member extending through the implement-receiving member at right angles to the axis of the member and entering the slot to engage and clamp an implement therein.

GEORGE LE BON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 438,271 Johnson Oct. 14, 1890 2,373,829 Hicks Apr. 17, 1945 

